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A Symmetric Perfectly Matched Layer Using a 9-Point Finite Difference Method for 2D Helmholtz EquationNormal access

Authors: Y. Park, H. Park, H. Song and C. Shin
Event name: 79th EAGE Conference and Exhibition 2017
Session: Seismic Modelling - Acoustic A
Publication date: 12 June 2017
DOI: 10.3997/2214-4609.201700772
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 899.12Kb )
Price: € 20

Summary:
Our strategy is to construct a symmetric matrix incorporating both the PML and the dispersion-minimizing property. We introduce a symmetric form of the PML for 2D Helmholtz equation so that a numerical factorization of a sparse matrix gets efficient. It reduces computational time and memory consumption. The symmetric PML equation is more suitable to applications utilizing Helmholtz equation than the nonsymmetric PML equation.


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